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$44+ Cheap flights from Ontario (ONT) to Mexico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Mexico

Keep the following information in mind while searching for Ontario to Mexico flight deals. Data was last updated September 11, 2025.

Round-trip from

$165
(Mytrip)

One-way from

$44
(CheapOair)

Popular in

December

Cheapest in

March

Average price

$363

Good round-trip deal

$175 or less

Good one-way deal

$39 or less
From Ontario to Mexico
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One-way flight from Ontario to Mexico
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Highest demand for flights based on searches. 11% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Ontario to Mexico.
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Price to beat on a one-way flight from Ontario to Mexico.
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Find flight deals from Ontario to Mexico

Cheapest flights from Ontario to Mexico
Explore the most affordable flight options available from Ontario to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:40 pmONT - SJD
Nonstop2h 24mVolaris
Mon 10/63:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 9/10$171
This Gotogate deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:40 pmONT - SJD
Nonstop2h 24mVolaris
Fri 10/313:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 9/10$173
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:40 pmONT - SJD
Nonstop2h 24mVolaris
Mon 11/35:12 pmSJD - ONT
Nonstop2h 32mVolaris
Deal found 9/11$180
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:59 pmONT - BJX
Nonstop3h 01mVolaris
Tue 10/78:43 amBJX - ONT
Nonstop3h 17mVolaris
Deal found 9/10$192
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:50 pmONT - SJD
Nonstop2h 22mVolaris
Mon 1/55:12 pmSJD - ONT
Nonstop2h 32mVolaris
Deal found 9/10$200
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1212:40 pmONT - SJD
Nonstop2h 24mVolaris
Fri 10/173:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 9/9$203
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:40 pmONT - SJD
Nonstop2h 24mVolaris
Sat 9/203:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 9/9$204
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:40 pmONT - SJD
Nonstop2h 24mVolaris
Thu 9/183:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 9/10$210
This Expedia deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:50 pmONT - SJD
Nonstop2h 22mVolaris
Mon 11/175:12 pmSJD - ONT
Nonstop2h 32mVolaris
Deal found 9/8$222
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:59 pmONT - BJX
Nonstop3h 01mVolaris
Sat 10/118:43 amBJX - ONT
Nonstop3h 17mVolaris
Deal found 9/10$226
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:50 pmONT - SJD
Nonstop2h 22mVolaris
Sat 11/222:55 pmSJD - ONT
1 stop11h 09mVolaris
Deal found 9/11$231
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2112:40 pmONT - SJD
Nonstop2h 24mVolaris
Thu 9/2511:53 amSJD - ONT
1 stop11h 20mVolaris
Deal found 9/9$234

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Mexico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Ontario to Mexico that are best for you.

Fly from

Ontario

Fly to

Mexico

Route

Depart

Return

Price

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Mon 9/29

11:59 pm-4:00 am

Nonstop3h 01m

León Del Bajio

Tue 10/7

8:43 am-11:00 am

Nonstop3h 17m

$192

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Fri 9/26

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Thu 10/2

3:54 pm-6:19 pm

Nonstop2h 25m

$210

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Fri 10/3

11:59 pm-4:00 am

Nonstop3h 01m

León Del Bajio

Sat 10/11

8:43 am-11:00 am

Nonstop3h 17m

$226

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Mon 11/10

12:50 pm-4:12 pm

Nonstop2h 22m

San José del Cabo Los Cabos

Thu 11/13

5:12 pm-6:44 pm

Nonstop2h 32m

$226

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Mon 10/13

11:59 pm-4:00 am

Nonstop3h 01m

León Del Bajio

Tue 10/21

8:43 am-11:00 am

Nonstop3h 17m

$238

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Sun 11/9

1:02 am-9:25 am

1 stop6h 23m

Mexico City Benito Juarez

Thu 11/20

4:45 pm-11:12 pm

1 stop8h 27m

$338

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Sat 11/15

7:00 am-10:35 pm

2 stops13h 35m

Guadalajara Miguel Hidal

Sat 11/29

5:45 am-9:49 pm

1 stop18h 04m

$344

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 10/27

6:00 am-3:16 pm

1 stop7h 16m

Cancun

Wed 11/5

8:00 am-10:22 pm

1 stop17h 22m

$346

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Thu 10/16

1:09 am-10:38 am

1 stop8h 29m

Oaxaca Xoxocotlan

Fri 10/24

4:36 pm-11:13 pm

1 stop7h 37m

$351

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 10/21

6:00 am-2:37 pm

1 stop6h 37m

Cancun

Fri 10/24

1:43 pm-9:24 pm

1 stop9h 41m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Mexico

Have a flexible travel schedule? Discover the best time to fly to Mexico from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Mexico

What is the cheapest month to book a flight from Ontario to Mexico?

Currently, May is the cheapest month in which you can book a flight from Ontario to Mexico (average of $387). Flying from Ontario to Mexico in December is currently the most expensive (average of $615). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to MX?

Find hourly flight availability from Ontario to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Mexico as you normally would.

Reviews of airlines servicing Mexico

Get insights into the airlines that provide service to Mexico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mexico. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Ontario to Mexico by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Volaris
6.6
Okay
1,155 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Mexico?

    For a flight from Ontario to Mexico, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • How long is the flight from Ontario to Mexico?

    There are many flights that can get you from Ontario to Mexico in 3h 01m. Fly via Volaris, United Airlines, or Delta to get the fastest option. The distance from Ontario to Mexico is about 1334 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Ontario to Mexico?

    Most travelers choose Ontario - Mexico City Benito Juarez, Ontario - Cancun or Ontario - Guadalajara Miguel Hidal when deciding on the best route from Ontario to Mexico.

  • Can I find deals for flights from Ontario to Mexico that include hotel bookings?

    Yes. In addition to deals on Ontario to Mexico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Mexico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Mexico.

  • Can I find deals for business class flights from Ontario to Mexico?

    Yes. Cheapflights offers flight deals from Ontario to Mexico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Mexico?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Mexico (average of $387). Flying from Ontario to Mexico in December is currently the most expensive (average of $615). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Mexico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Ontario to Mexico

Discover the top 8 airlines that operate flights from Ontario to Mexico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$132Average$494FlexibilityNo cancel feeOn-timeN/A
VolarisCheapest$151Average$356FlexibilityNo cancel feeOn-time79%
FrontierCheapest$161Average$392FlexibilityNo cancel feeOn-time62%
VivaCheapest$211Average$317FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$278Average$493FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$310Average$517FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$312Average$588FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$313Average$593FlexibilityNo cancel feeOn-time71%

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